Yeah, I programmed FORTRAN on the IBM 3090. It was water cooled, we had over 100,000 9-track 1/2" tapes. A huge room full of disk drives. The drives were oil filled and I believe held around 360MB of data, but the cabinets were about 6 feet tall by 2 feet wide by about 4 feet deep. But, the thing could process some data!
I was more interested in the language that you said you used. I had never heard of it and like I said, I had heard FORTRAN was developed from scratch, not derived from another language.